Here's why:
* Noun: A word that names a person, place, thing, or idea. "Plane" in this context refers to a flat surface.
* Adjective: A word that modifies a noun. "Inclined" describes the nature of the plane (slanted, tilted).
* Phrase: A group of words that acts as a single unit of meaning. "Inclined plane" is a phrase that functions as a noun, referring to a specific type of flat surface.
Let me know if you have any other questions!